Research On Interference Signal Statistics And Data Management Methods Of Radio Astronomy Station

In recent years,with the development of science,technology and other businesses has led to the continuous deterioration of the electromagnetic environment around radio observatories,and the increasing sensitivity of radio telescopes,the electromagnetic environment around the radio astronomy station has been continuously improved,the radio astronomy business is more and more vulnerable to interference.Radio frequency interference may lead to radio telescope system saturation or contamination of observation data.However,the impact of radio frequency interference on radio astronomical observations can be reduced by deleting contaminated observation data.But,this method will affect the effective observation time.In order to protect the good electromagnetic environment,the establishment of the electromagnetic environment monitoring station can effectively monitor the electromagnetic environment of the radio astronomical station,and the interference signal and its characteristics in the electromagnetic environment can be understood by analyzing the monitoring data,In order to alleviate the interference of radio astronomy business.Aiming at the electromagnetic environment monitoring station of QTT radio astronomical station,this paper establishes the corresponding data management system and data processing research method,manages the data of electromagnetic environment monitoring station effectively,analyzes the monitoring data,the concrete research content is as follows:1)According to the IEEE Std 181^TM-2011 standard issued by the Institute of Electrical and Electronics Engineers,the definition of pulse signal parameters is introduced.Combined with the actual data processing,the transient signal is analyzed to obtain the signal characteristics of the transient signal.2)Based on the data analysis requirements of the electromagnetic environment monitoring station of QTT radio astronomy station,a method for identifying and statistically analyzing the interference signal of wideband spectrum sequence is proposed.First,the signal identification is performed for each set of broadband spectrum;then,according to the signal recognition result,the signal spectrum of the wideband spectrum sequence is statistically analyzed;finally,the characteristics of the interference signal are analyzed to provide an effective basis for radio frequency interference mitigation.3)For the QTT radio astronomy station electromagnetic environment monitoring station,a monitoring station data management system is established.The electromagnetic environment monitoring station of QTT radio astronomy is introduced,and the test system,data storage format and storage mode of the electromagnetic environment monitoring station system and introduced.Analyzing the data management requirements of the monitoring station and establish a corresponding data management system.